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Halltech's Customers do the talking for us.
These testimonials are real and repeatable and are a represent
their results only:

Holy Halltech Horsepower!!

For
those of you on the fence about modding your z with
a tune and intake, Ive gotta say look no further
than a killer bee/ halltech tune.

I just got back from a short 60 mile jaunt up to
Jims house in Wisconsin, where despite him having to
travel out east in a few days, he went out of his
way to drop everything and work on my car.

In a matter of a couple hours, he had me on my way.
His brother even fixed a problem I was having with
my fender- very cool.

Everything that has been said about this package is
true. Im not much of a dyno guy, so Ill tell you
that seat-of-the-pants wise this thing pulls like a
freakin freight train.

Thanks again Jim

lumber

Well, HIRISC
asked for my feedback so here it is.

The software was easy to use and the download-upload
went without a hitch. The Killer Bee™ intake
was also easy to install, but the stock PVC breather
tube was too long, and it is made of a very hard plastic
which is problematic to trim. Jim was going to send me a
modified tube to replace it, but then Katech came out
with an excellent solution of using a different line and
different routing which really solved the problem. Jim
e-mailed me with this news (I had already read about it
here), and I went to the auto parts store and got some
hose. With the PVC breather tube inlet now at a 7
o'clock position instead of 10 o'clock, the whole
installation even looks better than factory, with no
tubing poking out of the top and running along (under)
the plastic intake cover. Pictures of this are here
(Halltech Killer Bee™ hose
routing update):

Background: I had a 225HP Audi TT that I purchased a
"chip" for. The thing cost $750 and I was unsure if it
was worth it. Had to remove the ECM and solder in
sockets and everything. It was supposed to add 25HP. I
didn't think that was much, and was totally prepared to
be underwhelmed. After the first drive I was blown away
by the performance difference, absolutely could not
believe how much difference it made. SO, when I had read
all of the reviews about the Killer Bee™
and Jim's tune, I thought I would give it a try.

How does it work?? If you have already done this to your
car, then you already know. If you are considering doing
this, and have the cash, then my opinion is - DO IT.
This review is totally subjective, and I have no dyno
results - others have already posted this. Also, I tend
to be understate these things rather than overstate
them. Adding 25HP to my 225HP Audi was certainly a
bigger gain than adding 30HP to a 505HP engine. But the
feeling was essentially the same. The car just wants to
run. I had noticed as the weather got much warmer here
in the north, that the car was not as responsive as it
was earlier in the year. It now feels like I got all
that back, and then some. The bottom line is that it is
a very noticeable improvement across the range. There
are plenty of other reviews you can read on this forum.

To me, all of this fits into the category of "mines
bigger than yours". Do you really need to add 30 to 505?
NO, BUT I WANT TO. This is an easy mod to do, is
(relatively) inexpensive, and is considered SAFE to do.
Also, it takes 10 minutes to reprogram back to stock if
you choose. The finally thing that pushed me over the
edge was the fact that Jim answered all my questions -
no matter how long it took - and he was there after the
sale to answer a few more as well. There are many other
posts on this board giving him accolades and they are
well deserved!

Ok so
I installed the new Black Killer Bee and Jim's tune
and
This car got sideways from just rolling on the
throttle in 1st gear at 3000 RPM, And the outside
temp was 99 degrees. (the car would never do this
unless is was 65 degrees or less before) I'm afraid
to drive this car tonight after is cools off.

Thanks Jim

Dyno #'s Killer Bee™ & NRP tune!:

Put
the Z on the dyno today 260 miles on the clock.
Halltech killer bee and tune from a local LSX
shop NRP. 100 degrees outside temp it managed
481HP 447TQ! The car really feels ALIVE now!!
Thanks Jim, and NRP!!

I ordered the Halltech E-Mail Tune
last week (thanks for the special
Jim!) and the hardware/software
arrived promptly. I hooked it up to
my laptop and plugged it in to my
ECM port and downloaded my current
stock file.

I e-mailed it to Jim and in less
than 2 hrs. I had the Halltech tune
in my e-mail box. I uploaded it to
my Z06 and then did the 20 mile
relearn drive.

What I immediately noticed is the
much improved, rapid & crisp
throttle response. The wheels will
break in 2nd at the blip of the
throttle. In comp mode there is a
noticeable improvement in torque.
(Very similar to my Viper).

The SOTP dyno feels much
better...it's like the car has come
to life. I now have just over 100
miles on the tune and all is well.
(No codes)

Dynoed by
our customers:

Halltech Stage 1 -
another report

Just dynoed the car after
installing Jim's F1 race
filter and tune. Here are
the comparison data. Both
the stock and modified runs
were done on LG Motorsports'
Dynojet.

BONE STOCK ( 63 deg F ) (
34% humidity )

Run ----- Oil T
----- H2O T -----
RWHP ----- RWTQ

1 -------- 149 ------ 198
-------- 456 ------- 424

2 -------- 158 ------ 210
-------- 463 ------- 431

3 -------- 153 ------ 205
-------- 458 ------- 431

F1 AIR FILTER AND HALLTECH
TUNE ( 70 deg F ) ( 30%
humidity )

Run ----- Oil T
----- H2O T -----
RWHP ----- RWTQ

4 *** invalid data (wheels
spun on dyno) ***

5 -------- 167 ------ 214
--------
484 ------- 446

6 -------- 156 ------ 203
-------- 481 ------- 453

Assuming the car has 505
FWHP, per Katech, then the
stock data reflect a 90.69%
flywheel-to-dyno rollers
efficiency under these
conditions, on this dyno.
(throw out high and low, use
458 rwhp, so 458/505 =
.9069)

Using the same efficiency
factor for the modded runs,
and using run 5 (the first
run, which isn't posted,
showed 486 hp / 344 tq - so
I threw it out as the "high"
and threw out run 6 as the
"low") gives 534 FWHP / 492
FWTQ.

So, it looks like Jim's
estimates on hp/tq gains are
right on, as the car gained
about 26 RWHP / 15 RWTQ (29
FWHP/17 FWTQ). The dyno
sheets show roughly constant
percentage hp and torque
gains across the rpm range.
(My 10 yr old says he can
photograph and load them on
the computer for me if he
can find the cable for his
camera. Boy does that make
me feel old and stupid.
)

My SOTP impression is more
low end torque (better
partial throttle response).
I can't tell much difference
on the high end. But I think
that's because in the days /
weeks before the mods it was
in the low 40s, so the ECM
wasn't pulling timing or
adding fuel, and the streets
and tires were cold = whoa!
I'm sure the real SOTP
difference will be when it's
90+ deg this summer, when
the stock ECM program
usually pulls like 30 hp
"just to be safe."

And the CAGS defeat is a
real plus.

30 ponies / 17 ft-lbs. Way
to go, Jim!

And a very special thanks to
LG Motorsports - Bobby (very
nice Cobra!), Anthony, Sean,
and Lou (wherever he is).
You guys run a first rate
shop.

- Dave

"So,
my wife and I decided to download the
new CA spec 474RWHP file, which
installed without a hitch.
Oh My God!
It feels markedly stronger than than the
one you sent yesterday--not that I could
tell that much difference at peak
because things were already happening
pretty fast with yesterday's file, but
through 4K, 5K and 6K it pulls second
and third gear so strong, that
it feels like there's substantial
increases through there in torque/hp. Second
gear was definitely testing the limits
of traction control (which I had kept
engaged for today's drive). I'm pretty
sure it will power spin the wheels in
second gear at 4500-6000, like it does
in first. Even my wife commented that
the car felt even stronger today than it
did yesterday with the first set of
files you sent."

Finally
got around to installing the Halltech
tune and filter for my VR Z and was very
surprised at the results. The SOTP feel
difference is very noticeable and
borderline L-88 with 4.11 gear feel. My
younger brother drove one of these
animals for a few years and finally
became too much trouble to drive in bad
weather and around town.

Getting back to my Z, Jim was quite
patient as he walked me through the
install and most helpful. I am now
positive as to the reason there are so
many anti-lunatic GM software power
management roadblocks built in to this
car. This tune clearly illustrates what
this car will do to rear tire wear,
driveline shock, parts destruction, etc.
On the other hand, if you have driven
vehicles with power close to this
animal, you know (or are pretty sure)
just about how much of this trigger you
can pull before you find yourself facing
traffic and stalling your car.

But, know that I have tasted this kind
of power only encouraged me to order
some more power adders (more trigger
draw). I now routinely scare the piss
out of the few select passengers that
have ridden in the car. Do I believe
that this is worth approx. 25 HP at the
rear - I don't have one doubt about it.
This easily the best "bang for the buck"
for the Vette owner that really does not
want to permanently alter the car in a
way that "Joe six-pack" can see from
across the street.
________________________________________

"I
don't post very often, but for this I
must.
I just installed the Halltech Stage 1,
Absolutely the most bang for the buck.
Installed the air filter, installed the
program, (very easy with the help of
Jim). Drove it for 20 miles. A large
noticeable increase in torque and usable
power, 1st gear is now to play with, 2nd
gear is just great fun. IMO it makes
this car do what it was designed to do.
No dyno, but grandma could tell the
difference.
I HIGHLY recommend it to anyone that
wants the most bang for the buck. And
you can set it back, if the time comes
that it has to go for any type of
warranty, or reprogramming by the
dealer."___________

Jim,

"I put
about fifty miles on the car since I
installed the ECM prog. - what a
difference!!! Drivability is
noticeably improved and definitely a big
diff in the SOTP at the lower end.
I feel that this tune has made the
biggest difference in an already serious
missile of a car. Thanks for
all of your help.

Albert
Alvarado - another very satisfied
customer."

_______________________________________________________________

"I'm
the guy with the tune and filter.

My car is an
07 and went 11.34 @125.00 on f-1's in
Florida heat and humidity w/ Jim Hall
behind the tuning. Many people saw the
run. C5frank was on hand. Ive been drag
racing manuals for 17 years. the car
picked up just over 2 tenths and two
miles an hour! all runs done same week.

"The tune
and filter feels like a different
machine, simply awesome."

Besides the
track, the feel on the street is brutal.
Blows the tires away from a 1500 rpm
blast from a first gear roll. This car
never did this. It is making more power
period. Any questions fire
away"....................

DP

_______________________________________________________________

Halltech tune after the
mods--impressions:

I
just got the tune loaded this AM, and w/
the American Racing headers/X-pipe/HiFlow
cats, F1 filter, AirCharger & 160
T-stat--the tune was the exclamation
point on the whole install...

The car feels almost violently fast now,
compared to just fast before. It will
break traction rolling into 1st gear,
where I'd need to stab it before & it
would not do it @ all stock. The tires
are still very fresh, so it's pure power
that's causing it.
The sensation over stock is akin to
adding short gears. All this w/ 87
degree temps (it's still hot here in FL)

I'm hoping It picked up approx 40/40
total over bone-stock (480/457ish)--it
certainly feels like it.
I will re-dyno it @ the same dyno (SGC)
soon. I'll also load the stock tune back
up to see how much the tune really
helped. The overall drivability was
improved as well.
Also, Jim included summer/winter tunes,
@ my request for the brutal summers
here.

I'm very pleased w/ the Halltech Stage 1
package & would recommend it--especially
w/ mods and you want the flexibility of
loading/unloading the tune (dealer
etc)."

Thanks Jim

__________________
George B.

Rick
Hollenback, Synergy Motorsports-"Hi
Jim, thank you again for sending us one of
your F1 race filters. I must say this is the
second time we have used it and it’s
awesome. This is the best filter so far.
Our test car belongs to John Palomino. I am
sure you remember sending him your other
filter last week.Here are some
more stage 2 numbers from another customers
car. On this particular car we did some
testing for Jim Hall over at Halltech on his
filter setups. We started off by dynoing the
car bone stock. The car did 469hp and 445TQ.
Not bad. After the install of our stage 2
package and Halltech's LS900 filter, the car
went 544hp and 502TQ. Not bad for 102*dyno
room temps. I cant imagine what this car
would do with 20* cooler air. Now here is
the cool part. We then swapped out Jims
filter with his new F1 RACE filter and
gained 10-12hp right off the bat. So now the
car screams with ~558 rwhp and 507 rw TQ. I
must say that our Stage 2 package will now
consist of Jim Hall's F1 filter as the new
addition to the package."
The dyno:.

This
is Howard at Redline Motorsports!!-"Finally
got a couple filters in from Jim today
at Halltech. All I can
say is that its a nice kick in the
pants!The stock filter is so bad its quite
amazing. The car pulls real hard
with this filter all over the rpm range.
For the money its a must. This week I am
going to do some controlled dyno testing
to back up the SOTP meter. If I
had to guess 10-15 all day long.
Nice job Jim!"

"Gentlemen,
I have ordered Halltech Stage I tuning
package and just finished my 5th day of
experimenting with it.
All that I can say .... It's plain
"Savagery" ... never thought the tune by
itself could add such a brutal excitement to
an already exciting Car. The last
couple of days here in Dubai been very hot
(+110 F); even though the heat didn’t feel
like having much of a toll on the tune."
Jim, I'm still waiting for my F1 Race filter
... to further enrich the experience."

Pete
B.-506/480 (standard)

496
RWHP/471 RWT (SAE)

"Their
air/fuel didn't work tonight. Are these
the #s you'd expect?

Thanks
for your help." (Halltech Stage 1 and LG
Headers)

Walter
S.-" I did the Halltech Stage 1 Package.
I finished the installation of the F1
filter and Halltech Programming, which
was an easy install, a bit doubtful at
first thinking, it can't help that much. I must
say, I was very surprised it ran like a
different car at wide open throttle, the
SOTP meter was off the charts, really,
it feels like a 100 shot of nitrous.
For the money, it's a bargain"

First Mods Gain 26rwhp 16tq

Dale
P.-"Reporting in on my first set of
Modification to my Z06:

Dyno comparing the stock filter and
stock tune to Halltech's Stage 1

"I
installed an Air-Charger CIA at
about 6,000, Halltech UPS tune at
7,000, and at 13,000 received my F-1
filter from Halltech. Baseline
with stable temps 175 oil, 196 water
51 air temp on DynoJet:450rwhp
420rwtq This was mid Feb., with
5,000 miles on car no Mods). This
was average pull, best was 454.8rwhp
with cooler temps. Today: With
stable temps 180 oil, 200 water, air
temp 79 same DynoJet:
476rwhp 436rwtq car shows 13,651
miles on OD. These pulls were
with hood down, monitoring intake
temp with IR hand held meter (for
stability), oil and water temps read
from DIC. It seemed that a stable
intake temp of around 120 produced
best results starting pull temp).

First
mod! F1 Filter from Halltech.
Wow!:

"This is my first mod to any
of my Z06's. The filter feels
great. Feels better when
running thru gears at part gas.
I feel less lag between shifts.
Seems to rev to 7000 easier! I
love the new mod. You pay
$189.00 for R&D not material.
But it works."